Gas-engine.



J. M. ULRICH.

I GAS ENGINE. APPLICATION FILED AUG. 14, 1906.

1,019,563, ,l Patented Mar.5,191`2-.

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GAS Fl.\T(-:INL.V

APPLIGATION FILED 111mm, 190s.

Patented Mar. 5,1912.

2 SHEETS-SHEET z.

JULIUS IVI. ULRICH, OF GREENWICH, CONNECTICUT, ASSIGNOR OF ONE-HALF TOWIL- LIAJVI RAI-IR, JR., OF MANITOWOC, WISGONSIN.

GAS-ENGINE.

Lafrance.

To all whom 'it may concern:

rBe it known that I, JULIUs M. ULRICH, a citizen of the United States,residing in the city of Greenwich, county of Fairfield, State ofConnecticut, have invented a new and useful GaseEngine, of which thefollowing is a specification. v

My present invention relates to two-cycle gas engines and one of themain objects thereof is to eliminate any gasolene gas heing taken intoor discharged from thecrank case of the engine.

Another objectof my present invention is to produce a novel constructionof a; gasolene engine in which the fuel is not formed or used untilafter the completion of the compression stroke in the crank case' andthe feed supply is acquired under compression or forced air circulation.

Another object of my invention is to produce a construction in whichthere is no possibility of back firing into the crank case andconsequent stopping of the engine.

Another object of my invention is to produce a construction in whichthere is no possibility of the flooding of gasolenevapor into the crankcasing and thus prevent the cutting of the bearing parts owing to theoil being thinned by the gasolenc.

Another object of my present invention is to produce a construction inwhich the highh est speed of the engine may be maintained owing to theproduction of a propell mix'- ture of gasolene and air instead of amixture of air, gasolene and oil. h l

Another object of my invention is to produce a novel construction of ncarbureter'in which the valve, which controls the admission of fuelthereinto, controlled by the air compressed in the crank case passingthrough the carbureter.

My invent-ion further consists of a novel construction of a valve whichautomatically controls vthe vadmission of air to the carbureter.

lt further consists of other novel features of construction, all as willbe hereinafter fully set. forth.

ln order to illustrato my invention` l have shown one embodiment thereofwhich has been found in practice to give good and satisfactory results,although it is to be understood that the nstrumentalities of. which' myinventionconsist may be variously arspecifiatioa f Letters Patent.

'Application filed August 14, 1,906.

Patented Mar. 5, 1912.

Serial No. 330,577

is not limited-to the exact arrangement and organization ofinstrumentalities as herein shown. l Figure 1 represents a sideelevation partly in section of a two-cycle gas 'engine embodying myinvention. Fig. 2 represents a longitudinal section of the distributervalve. Figq `represents a section on line --a of F ig. 2. Fig. 4represents a section on line g/-g/ of Fig. 2.

Similar numerals of reference indicate corresponding parts in thefigures.

^ Referring to the drawings :-1 designates the engine. or cylindercasing having a coinbustion 'chamber 2 in which is adapted to travel apiston 3 to which is secured in the usual manner, as at 4, aconnecting-rod 5, which is connected with the driving shaft (i in theusual manner, in order to actuate the same, said shaft being located ina lcrank chamber 7 n 10 designates a gear mounted onthe shaft 6 whichmeshes with an idler 11, said idler 11 meshing with a gear 12 mounted ona shaft 13. y

14 designates a rotary distributer valve mounted on the shaft 13 andadapted to control the entrance and discharge of'air from the atmosphereto they crank chamber and from the crank chamber through theA carbureterto thev cylinder` compression chamber2. The valve 14' comprises lav plurality of segments 15 and16through which l I extends an air passage orport,17,`said passage or port passing throughthe diametrical 4- axis ofthe valve. kThe .valve 14 .engagesthe valve bushing 18 which is locatedinv the .l

valve casing 19. The segment V15 is provided with apertures or recesses`2O from which extend the seats 21. The segment 16 is pro,- vided in asimilar manner with apertures or recesses 22 from whichextend the.seats23, l

15 and the shaft 13, 26 designate similar springs located in theapertures 22and inshaft 13, said springs 25 and 26 v segments to engagethe valve bushing y The segments 15A and 16 `mayj-be suitably cored ifdesired although this'is not tial under all conditions.

cates by means of ports 28 and-*29 sage 17 with the crank chamber 7. A30 designates a port throughA which the air is discharged from the crankchamber 7 the air passing through said port 3 0, passage 1-7 and port 31into the carbureter mixing'or commingling chamber 32.

33 designates a throttle valve mounted within the carbureter casing 34,'said valve being provided with a t e samemay and pas'- actuated.

be manually 36 designates the fuel inlet which leads l to the floatchamber 37.

38 designates the inletcasing having a feedl passage 39 therethrough,'itbein noted that the casing 38 is bent upwardly and adapted to receive atits upper end a disk valve 40 which is movably mounted on a, needlevalve 41, the upper end of'ivhich is guided -in a sleeve or tube 42,which has threaded or other engagement with the carbureter casing andprovided withan actuating handle 43.

44 designates a spring interposed between I Vthe end of vthe sleeve 42and the disk valve 40.

The needle valve 41 is actuating handle 60 at its inner en through thefeed inlet 39. The feed inlet 39 has at its upper -end a plurality ofpassages or portsA 46 "which lead throu h the closed upper end oft-hecasing 38, sai ports in the present instance being shown asdiverging from the feed n'1et39.

47 designates a by-pass leading from the carbureter chamber 32 andopening into the` upper portion ofthe-float chamber 37, said may' beregulated as designates 'a plunger forV priming the float in the floatchamber 37.

50 designates the cylinder inlet .port through which theexplosive'mixture passes to the combustion chamber 2.

51 and 52 designate exhaust from the chamber 2 sage 53. v

54 designates a spark plug carried at the upper end of the cylinder l inthe usual manner and'constitutes the sparking or ignition mechanism Aforthe explosive mixture.

ports leading to the exhaust pas- The crank casing 7 is provided witharms -causing said: .be

essen'- easing Y. T158' eslgn'atesan 011 drain cock. 27 designates theair inlet which communi` handle 35 wherebyl A ports 51 an asiatica,

or'bracketsvf' in order that the same may secured vto a suitable supportby means of anydesired fasteningA devices.

designates an aperture through the contigugus the crank chamber 7.

l"l-"lie operation is as follows :'-Assuming that the pisto is at the toof its stroke and travelingmtoward the crank chamber, as the pistonnoves downwardly, the; air in. the crankj'chamber7 is compressed. Thecom' pression' offair. in the crank chamberl qontinues until the piston,opens valve 14'is sage l17 will register with and the compressed airasses through said ports and passage intot Ve carbureter chamber 32, itbeing understoodthat the throttle valve 33v is open at this time. As thecomdriven, the ports 30 an 31 thepprtsmt which time owing to .the manner41n wh`1`ch vthe distributer pressed air passes through thecarbureterchamber 32, it causes -the disk valve 40 to be raised and adesired amount of gasoleneis withdrawn, said valve 40 rising and fall-.ing according to thespeed of the-engine and lius the amount of gasolenewhich is withdrawn will depend upon the speed of the en-m gine.` Theexplosive mixture' formed by the air and gasolene passes from the'carbureter port 50 into tlieexplosion or combustion cliamber'2 andvdrives out the Waste products of combustion from the previous explosionwhich are discharged through d 52, into the exhaust passage 53. Thedist-ributer valveA 14 continues -to rotate and closes `,The piston nowtravels upwardly and a vacuum is formed in the crank'chamber. As thisvacuum is being formed, the members 15 and- 16 of the distributer aremaintained against the valve walls until the vacuum e passage 17 of thedistributer valve 14 coming int-o register with the .ports 28 and 29where pon the air is drawn from the air inlet 27 through said ports 28and 29, and passage 17 into the crank chamber 7."

en the en'gineruns at normal speed, the valve 40 remains unseated andfuel is admitted t rough the passage 39 under the ioat feed system. Whenvthe enginestops the spring 44 will cause the disk valve 40 to epositively seated and no flooding of gasolene into the carbureter mixingchamber 32' can take place.

Thethrottle valve is so located thatl when it is closed no pressure isexerted on the supply valve 40 or the needle valve 41, in other words,pressure by throttling is retained in the crank chamber.

is released 'l the carbureter to the combustion chamber must openrinunison with t 1e supply ports 30 and 31. I am enabled by my novelconstruction to construct the crank casing of comparatively lightmaterial since the liability of eXplosions tiring back thereinto iseliminated, and the amount of oil which it is necessary to employ isreduced toa minimum.

It Will he apparent to those skilled in the art that in my presentconstruction of carbureter, the same embodies a combined lfloat andvalve feed.

It vWillnovv be apparent from the foregoing that I have produced a noveland useful construction of a two cycle gas vengine which embodies thefeatures of advantage enumerated as desirable in the statement ofinvention and the 'above description and While I have, in the presentinstance, shown and described the preferred embodiment thereof, it is tobe understood that it is susceptible of modilication in variousparticulars Without departing from the spirit and scope of the inventionor sacrificing any of its ad- Vantages.

.Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

l. In a two-cycle gas engine, in combination with the combustionrhamberand the crank chamber thereof, a carbureter communicating with saidchambers, a drivin shaft, and rotary means actuated thereby tor ccn--trolling the discharge of air from said crank chamber to' saidcarbureter and the admission of au' to said crank chamber.

2. In a two-cycle gas englne, 1n combination with the combustion chamberand the crank chamber thereof, a carbureter communicating with saidchambers, a driving shaft,

and a distributer valve operatively connected therewith and adapted toadmit air to the crank chamber at a predetermined time and to permit onthe completion of the compression stroke the discharge of air from saidcrank chamber to said carbureter.

3. In a two-cycle gas engine, in combina,- tion With the combustion` andcrank chamber thereof, a carbureter communicating with said chambers, adriving shaft, and a rotary distributer valve having a port therethroughand operatively connected with said shaft, there being ports for theadmission of air to said crank chamber and the discharge of air fromsaid crank chamber to said combustion chamber adapted to register Withvsaid distributer port and ,there being an in- `let port communicatingWith the atmosphere and controlled by'said valve.

4. In a two cyclegas engine, the combination with a casing forming thecombustion and crank chamber thereof, a carbureter communicating withsaid chambers, a driving shaft, valve mechanism having a porttherethrough operatively connected With said shaft and controlling thedelivery of air from the crank chamber to the carbureter, said casinghaving ports for the admission of air to said crank chamber and thedischarge of air from said crank chamber to said combustion chamber andadapted to register with the ort of said valve mechanism, and saidcasing ports including an inlet port communicating With the crankchamber and with the atmosphere and controlled by said valve mechanism.

Y JULIUS M. ULRICH. Witnesses:

WILLIAM H. HUBBARD,

` ERNEST B.`P1LcHER.

Copiesvof this patent may be obtained for five cents each, by addressingthe Commissioner of Patents; Washington, D. G.

